The model revealed in her OK! column she was worried the baby was en route when she began to feel something was wrong.

Danielle explained doctors discovered protein and some blood in her urine so prescribed antibiotics that can cause pregnant women to go into pre-term labour.

She was particularly worried as her son Harry, now five, was more than two months premature when he arrived in July 2011.

She said: "I thought 'oh god I’m going to have this baby', I could just feel something was wrong, you know your own body," she wrote, before adding that she felt a bit better after taking the prescribed medication.

"I fully thought I was in labour last week, they did a test where they take a swab and can tell if you’re going to go into labour in the next four days. I was so nervous waiting, but thankfully they said I’m going to be ok."